Hi all,

I saw this movie in tv during the 90s. It is coloured.

All I could remember is that

1: there are 2 children. 1 boy 1 girl crawling under their blanket to go to a different world.

2: lastly their parents crawl too to save their lifes.

I could not even remember on why are they crawling and who is the bad characters.

I would like to thank you all if any of you can help me with the movie title.

thank you